Alert archive / Michigan / Mesoscale Discussions

Mesoscale Discussions in Michigan, 2009

53 mesoscale discussions in 2009. An alert counts here when it covered any part of the state, so the counties below add up to more than the state. The archive of mesoscale discussions reaches back to 2003.

Mesoscale Discussions by county

Each county as a circle sized by its count in 2009. Tap one for its archive.

Mesoscale Discussions
53
Busiest month
June18 mesoscale discussions
Busiest day
June 19, 20097 mesoscale discussions

Over time

By month

The alerts

Every alert, in the order issued. Times are local, Eastern Time. Each opens its own page with the text, the map, the radar and the sounding.

IssuedProductOfficeCountiesLasted
Jan 4, 1:08 AM ESTMesoscale DiscussionSPCAntrim, Benzie, Charlevoix, Cheboygan, Chippewa, Clare and 26 more4 hr
Jan 4, 6:56 AM ESTMesoscale DiscussionSPCAntrim, Arenac, Bay, Cheboygan, Clare, Clinton and 30 more3 hr
Jan 10, 6:33 AM ESTMesoscale DiscussionSPCBranch, Calhoun, Hillsdale, Lenawee, Monroe, Saint Joseph5 hr
Jan 14, 5:00 PM ESTMesoscale DiscussionSPCBerrien6 hr
Jan 17, 6:35 AM ESTMesoscale DiscussionSPCAntrim, Baraga, Benzie, Charlevoix, Clare, Crawford and 27 more4 hr
Feb 21, 6:35 AM ESTMesoscale DiscussionSPCAllegan, Arenac, Barry, Bay, Branch, Calhoun and 44 more5 hr
Feb 26, 7:31 PM ESTMesoscale DiscussionSPCAlcona, Alger, Alpena, Antrim, Benzie, Charlevoix and 21 more5 hr
Mar 8, 1:58 PM EDTMesoscale DiscussionSPCAntrim, Benzie, Charlevoix, Delta, Grand Traverse, Leelanau and 3 more4 hr
Mar 8, 7:42 PM EDTMesoscale DiscussionSPCAlcona, Alpena, Antrim, Benzie, Cheboygan, Crawford and 14 more3 hr
Mar 29, 6:01 AM EDTMesoscale DiscussionSPCAntrim, Benzie, Charlevoix, Cheboygan, Chippewa, Emmet and 14 more4 hr
Apr 2, 9:02 PM EDTMesoscale DiscussionSPCBranch, Calhoun, Genesee, Hillsdale, Ingham, Jackson and 13 more118 min
Apr 6, 2:04 AM EDTMesoscale DiscussionSPCAllegan, Barry, Berrien, Branch, Calhoun, Cass and 21 more4 hr
Apr 24, 8:42 PM EDTMesoscale DiscussionSPCDickinson, Gogebic, Iron, Ontonagon63 min
Apr 25, 10:23 AM EDTMesoscale DiscussionSPCAlcona, Alpena, Arenac, Barry, Bay, Clare and 27 more2 hr
Apr 25, 11:55 AM EDTMesoscale DiscussionSPCAlcona, Alpena, Arenac, Barry, Bay, Calhoun and 31 more95 min
Apr 25, 1:06 PM EDTMesoscale DiscussionSPCArenac, Barry, Bay, Calhoun, Clare, Clinton and 26 more84 min
Apr 25, 2:55 PM EDTMesoscale DiscussionSPCAllegan, Arenac, Barry, Bay, Berrien, Branch and 25 more95 min
Apr 25, 7:15 PM EDTMesoscale DiscussionSPCAllegan, Barry, Berrien, Branch, Calhoun, Cass and 21 more60 min
May 13, 11:17 PM EDTMesoscale DiscussionSPCAllegan, Barry, Berrien, Branch, Calhoun, Cass and 9 more58 min
May 30, 12:28 PM EDTMesoscale DiscussionSPCAlcona, Alpena, Antrim, Arenac, Barry, Bay and 35 more2 hr
Jun 1, 5:36 PM EDTMesoscale DiscussionSPCHillsdale, Lenawee, Monroe54 min
Jun 1, 7:34 PM EDTMesoscale DiscussionSPCBerrien86 min
Jun 8, 3:34 PM EDTMesoscale DiscussionSPCBarry, Branch, Calhoun, Cass, Clinton, Eaton and 15 more56 min
Jun 8, 4:53 PM EDTMesoscale DiscussionSPCBerrien67 min
Jun 8, 6:46 PM EDTMesoscale DiscussionSPCAllegan, Barry, Branch, Calhoun, Cass, Clinton and 20 more59 min
Jun 19, 12:07 AM EDTMesoscale DiscussionSPCAllegan, Berrien, Cass, Kalamazoo, Kent, Muskegon and 4 more53 min
Jun 19, 3:38 AM EDTMesoscale DiscussionSPCAllegan, Barry, Berrien, Branch, Calhoun, Cass and 5 more97 min
Jun 19, 7:37 AM EDTMesoscale DiscussionSPCBranch, Cass, Hillsdale, Saint Joseph83 min
Jun 19, 11:27 AM EDTMesoscale DiscussionSPCBerrien, Cass63 min
Jun 19, 2:37 PM EDTMesoscale DiscussionSPCBerrien, Branch, Cass, Saint Joseph83 min
Jun 19, 6:11 PM EDTMesoscale DiscussionSPCBerrien, Cass, Saint Joseph94 min
Jun 19, 7:04 PM EDTMesoscale DiscussionSPCAllegan, Barry, Calhoun, Clinton, Eaton, Genesee and 19 more86 min
Jun 19, 8:28 PM EDTMesoscale DiscussionSPCAllegan, Barry, Calhoun, Jackson, Kalamazoo, Van Buren92 min
Jun 19, 9:34 PM EDTMesoscale DiscussionSPCBranch, Cass, Hillsdale, Saint Joseph86 min
Jun 19, 9:57 PM EDTMesoscale DiscussionSPCBarry, Eaton, Ingham, Livingston, Oakland, Wayne63 min
Jun 25, 1:30 PM EDTMesoscale DiscussionSPCBarry, Branch, Calhoun, Cass, Clinton, Eaton and 14 more60 min
Jun 25, 4:12 PM EDTMesoscale DiscussionSPCBarry, Branch, Calhoun, Clinton, Eaton, Genesee and 21 more63 min
Jun 25, 7:09 PM EDTMesoscale DiscussionSPCGenesee, Ingham, Lapeer, Lenawee, Livingston, Macomb and 7 more96 min
Jul 5, 2:33 PM EDTMesoscale DiscussionSPCAlcona, Alpena, Arenac, Bay, Genesee, Gladwin and 14 more117 min
Jul 11, 3:31 AM EDTMesoscale DiscussionSPCAllegan, Barry, Branch, Calhoun, Cass, Clinton and 17 more29 min
Aug 9, 3:13 PM EDTMesoscale DiscussionSPCAlcona, Alpena, Antrim, Cheboygan, Crawford, Emmet and 12 more32 min
Aug 9, 5:18 PM EDTMesoscale DiscussionSPCAllegan, Barry, Bay, Branch, Calhoun, Cass and 33 more57 min
Aug 10, 12:42 AM EDTMesoscale DiscussionSPCBarry, Clinton, Eaton, Ingham, Ionia, Kent and 2 more3 hr
Aug 11, 12:39 PM EDTMesoscale DiscussionSPCHillsdale, Lenawee, Monroe, Wayne2 hr
Aug 19, 9:18 PM EDTMesoscale DiscussionSPCBarry, Calhoun, Clinton, Eaton, Genesee, Gratiot and 11 more57 min
Aug 20, 11:42 AM EDTMesoscale DiscussionSPCLenawee, Monroe, Washtenaw2 hr
Aug 20, 2:00 PM EDTMesoscale DiscussionSPCGenesee, Lapeer, Livingston, Macomb, Oakland, Tuscola and 2 more60 min
Sep 27, 4:00 PM EDTMesoscale DiscussionSPCBaraga, Gogebic, Houghton, Iron, Ontonagon2 hr
Sep 27, 10:14 PM EDTMesoscale DiscussionSPCAllegan, Barry, Branch, Calhoun, Cass, Clinton and 9 more2 hr
Dec 9, 12:09 AM ESTMesoscale DiscussionSPCAlcona, Alpena, Antrim, Arenac, Barry, Bay and 45 more6 hr
Dec 9, 7:28 AM ESTMesoscale DiscussionSPCAntrim, Benzie, Charlevoix, Cheboygan, Chippewa, Emmet and 7 more4 hr
Dec 23, 6:15 PM ESTMesoscale DiscussionSPCAllegan, Berrien, Cass, Kalamazoo, Saint Joseph, Van Buren4 hr
Dec 24, 7:28 PM ESTMesoscale DiscussionSPCBay, Benzie, Clare, Clinton, Crawford, Gladwin and 22 more4 hr

By county

Every county with at least one alert. A county page lists each alert that covered it.

42 more counties

The busiest days

Days with the most alerts issued, by UTC date.

  1. June 19, 20097mesoscale discussions
  2. April 25, 20096mesoscale discussions
  3. June 8, 20093mesoscale discussions
  4. June 20, 20093mesoscale discussions
  5. June 25, 20093mesoscale discussions
  6. August 20, 20093mesoscale discussions
  7. January 4, 20092mesoscale discussions
  8. March 8, 20092mesoscale discussions
  9. June 1, 20092mesoscale discussions
  10. August 9, 20092mesoscale discussions
  11. December 9, 20092mesoscale discussions
  12. January 10, 20091mesoscale discussions

Nearby

Alerts in force nowTornadoes on recordThe radar archive20082010

Sources

National Weather Service watches, warnings, advisories and statements from the Iowa Environmental Mesonet's VTEC archive, which reconstructs tornado, severe thunderstorm, flash flood and marine warnings back to 1986 from the NWS text archive. Storm Prediction Center watches and mesoscale discussions from SPC's archive through the Mesonet. County centers from the US Census Bureau. Warning verification from the Mesonet's Cow. Rebuilt daily.